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1768 Appenzella (1965 SA)
Classification: Main-belt Asteroid          SPK-ID: 2001768
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794505211695383 9.5149e-09  
a 2.450151645236767 7.4045e-09 au
q 2.010470655554628 2.2779e-08 au
i 3.254686756437267 2.9032e-07 deg
node 12.34475667863209 1.11e-05 deg
peri 20.12161425372669 1.2118e-05 deg
M 123.6151640114443 3.5557e-06 deg
tp 2458719.486658248732
(2019-Aug-23.98665825)
1.3159e-05 TDB
period 1400.837869813649
3.84
6.3501e-06
1.739e-08
d
yr
n .256989054734714 1.165e-09 deg/d
Q 2.889832634918907 8.7332e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2777  
   data-arc span      28678 days (78.52 yr)  
   first obs. used      1942-09-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45143  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:54:45  

Additional Information
 Earth MOID = 1.01556 au 
 Jupiter MOID = 2.55211 au 
 T_jup = 3.472 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.66   n/a E2021B10 IRAS observations used: 2
diameter diameter 20.221 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.1839 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.032   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.615   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.52 deg.
U-B UB 0.230   0.060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.52 deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1768 Appenzella (1965 SA)          Discovered 1965-Sep-23 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1965 SA = 1934 PM = 1942 TH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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